My goal was to find bullets that would shoot well and the same in my 19x and in the Vaquero convertible. I actually like shooting the ACP cylinder the best. Loading and unloading is easier. Reloading ACP cases is less fiddling than large cases and they are cheaper. The convertible is definitely more flexible, the only negative I see is the $150 for the extra cylinder. The picture loaded rotated 90 degrees counter clockwise. The guns are the bottom referenced in the text.